Here's a classic from when DJ starts going to church...

DJ: What religion are we?

Roseanne: We're Good people, DJ.

Dan: Yeah, only we're not practicing...

There are a couple of good ones in the episode where D.J is peeking at Darlene.

Darlene:Mom, D.J was peeking at me when I was getting changed.

Roseanne:D.J I told you to stop doing that.

D.J:you told me to stop peeking at Becky.

Roseanne:Hes got me there

and

Darlene:D.J was peeking at me!

Becky:Why?

Actually, the first quote you mention goes more like:

DJ "What religion are we?"

Roseanne: "I don't kinow, Dan?"

Dan: Well, Your mom's mon is Lutheran, you're mom's dad was Jewish, my family is Baptist."

roseanne: "Basically, we believe in being good, so that makes us... um, good people."

It's in the episode where lecy comes back in season 8, her and Darlene are fighting and Roseanne yells at them for having a childish fight.
Becky:No mom, this was an adult fight.
The line isn't that funny but the way she says it is classic.
I also like the one where Becky wants to go on the pil,
Becky:Mom, I think it's time to get some birth control.
Jackie:Isn't it great Roseanne!

I love the way Jackie says that line. There were alot of great delieveries by Laurie Metcalfe.

I love the one-

Roseanne - "Normal mothers don't have daughters in therapy"
Bev "Who's in therapy?"
Jackie: "Roseanne..."

But it's not the line, it's the way Laurie delievered it that made it hilarious